Altamont Weather Forecast
Weather forecast for: Altamont IL
Last Update: 7:36 am CDT Sep 25, 2026
Today: Partly sunny, with a high near 73. Northeast wind around 6 mph.
Tonight: Mostly cloudy, with a low around 56. East northeast wind 3 to 5 mph.
Saturday: Mostly sunny, with a high near 72. East wind 3 to 6 mph.
Saturday Night: Mostly cloudy, with a low around 55. Calm wind.
Sunday: Partly sunny, with a high near 74. Calm wind.
Sunday Night: Mostly clear, with a low around 52. Calm wind.
Monday: Sunny, with a high near 77. Calm wind.
Monday Night: Mostly clear, with a low around 55.
Tuesday: Mostly sunny, with a high near 79.
Tuesday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 62.
Wednesday: A chance of showers. Mostly cloudy, with a high near 76.
Wednesday Night: A chance of showers. Mostly cloudy, with a low around 63.
Thursday: A chance of showers. Partly sunny, with a high near 79.